4535 611 98931 iE33 Service Manual Page 241
CSIP Level 1 Troubleshooting: Power Input Requirements
6. To determine line loss, if a facility representative is available:
a. Have the facility representative measure the voltage at the line’s circuit breaker primary
in the distribution sub-panel.
b. Measure the voltage at the wall outlet.
c. Calculate the percentage of voltage loss across the line using this formula:
Percent line loss = [(A - B)/A] x 100
where A and B are the voltages at the circuit breaker and wall outlet with the system on,
respectively.
d. Continue with step 8.
7. If a facility representative is not available:
a. Measure the voltage at the outlet with the load on and off.
b. Calculate the percentage of voltage loss across the line using the formula:
Percent line loss = [(A - B)/A] x 100
where A is the voltage at the wall outlet with the system off and B is the voltage at the
wall outlet with the system on.
8. Record your power quality observations and measurements.
9. Review the electrical site evaluation with the facility representative.
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